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National RV Siding Ltd.

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      • SMOOTH LOCK
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Types of Locks

1. SMOOTH LOCK (SL)

  • The 1/2” SL uses 2” of metal from the overall cut size.
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  • The 3/4” SL uses 3” of metal from the overall cut size
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  • The 3/4” SL is user friendly and allows more room for error.

2. PITTSBURGH LOCK (PL)

  • The PL uses 2 inches of metal.

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3. MOCK PITTSBURGH LOCK (ML)

  • The ML has become more popular over the past few years.
  • It is located at the bottom of units, 1″ of material is required to manufacture the ML.

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4. NO LOCK (NL)

  • This indicates that no lock is needed and just the rough edge is left.

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5. HEM LOCK (HL)

  • The HL is utilized for pieces which may require a 1/2 inch return to allow the finished edge to be smooth rather than raw. (as is the case when no lock is applied.)
  • The standard HL has a 1/2 inch return as it is the minimum amount needed to manufacture the HL, however returns of 3/4″, 1″ etc., are also possible.

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6. ROOF LOCK

  • Roof lock locks two or more pieces together with only a small seam.

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CONTACT INFO

  • Main Office: 14305 121A Avenue Edmonton, Alberta Canada T5L 2T1
  • 1-780-448-0851
  • shipping@rvsiding.com
  • rvsiding.com

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